Obtaining nitrophos fertilizers with copper, zinc, molybdenum

Abstract

The purpose of the research is to obtain micronutrient fertilizers by applying micronutrient salts and their complex forms to phosphorus fertilizers obtained in incomplete standards of nitric acid or their salt mixtures. Central Kyzylkum phosphorites (low-grade P2O5-12.38%, CaO-43.68%, CO2-13.48%, non-enriched P2O5-16.38%, CaO-45.93%, CO2-18, 15%, SO3-1.86%, thermoconcentrate P2O5-27.40%; CaO-54.68%; CO2- 4.52%) were decomposed with nitric acid at different rates and phosphorus fertilizers were obtained. Copper and zinc sulfate and ammonium molybdate (Cu, Zn, Mo) salts and their complex forms were applied to the obtained fertilizers and their chemical composition was studied. Central Kyzylkum phosphorite flour was processed in different concentrations of nitric acid. The process of granulation of recycled phosphorus fertilizers in different standards was carried out with the participation of micronutrient salts and their complex solutions, and it was possible to obtain micronutrient phosphorus fertilizers. Along with nitrogen, phosphorus, potassium fertilizers, the demand for micronutrient fertilizers is also increasing in our republic. Currently, microfertilizers are used in practice in very small quantities. In the production of mineral fertilizers, the use of various wastes and products of non-ferrous metallurgy containing microelements, sour effluents, spent catalysts and other types of secondary products is one of the solutions for the production of microelement fertilizers.